Activated carbon sampling device for activated carbon pool

Abstract

The utility model discloses an activated carbon sampling device for an activated carbon pool, a rod assembly comprises a first connecting rod and second connecting rods, and the sampling depth is adjusted by increasing or decreasing the number of the second connecting rods; the sampling assembly comprises a sampling rod and a flow guide plate; the sleeve assembly comprises a sleeve and a third connecting rod, and the sleeve sleeves the rod assembly through the third connecting rod and can move relative to the sampling assembly. During sampling, the sampling assembly is rotated to enable the flow guide plate to collect samples, then the sleeve blade edge is cut into the activated carbon layer, and in-situ water filtering is achieved through the first water permeable holes. The device can obtain the deep sample of the carbon pool without manual excavation, avoids pollution and is convenient to operate; a detachable structure is convenient to adjust the sampling depth and carry and transport; the flow guide plate and the first water permeable holes cooperate to avoid the pond body drainage step, the sampling efficiency is improved, and the detachable connection of the device gives consideration to the operation flexibility and the sampling precision.

Description

Technical Field

[0001] This utility model relates to the field of activated carbon sampling, specifically to an activated carbon sampling device for activated carbon pools. Background Technology

[0002] In activated carbon water treatment processes, regular sampling and testing of the activated carbon tank is a crucial step in evaluating adsorption efficiency and regeneration requirements. However, traditional sampling methods often rely on manual excavation to obtain carbon layer samples, which presents problems such as damaging the integrity of the tank structure, susceptibility of surface samples to external contamination, and difficulty in deep sampling, especially for large activated carbon tanks where accurate stratified sampling is challenging. Existing sampling tools generally suffer from fixed and non-adjustable structures, failing to adapt to sampling needs at different depths, and activated carbon particles are prone to settling due to their own weight during sampling, leading to stratification failure. While some devices employ tubular sampling structures, they lack effective in-situ filtration capabilities, requiring pre-emptive drainage of the tank water, significantly extending operation time. Furthermore, the non-removable structure of conventional samplers makes transportation and storage inconvenient, while rigid insertion methods easily disturb the carbon layer, affecting sample representativeness. Utility Model Content

[0003] In view of the above problems, this utility model provides an activated carbon sampling device for activated carbon pools, which solves the problems of surface samples being easily contaminated by external factors and deep sampling being difficult.

[0004] To achieve the above objectives, this application provides an activated carbon sampling device for an activated carbon pool, comprising a rod assembly, a sampling assembly, and a sleeve assembly. The rod assembly includes a first connecting rod and a second connecting rod, which are detachably connected. The sampling assembly includes a sampling rod and a guide plate, which are spirally distributed around the periphery of the sampling rod, and the sampling rod is detachably connected to the second connecting rod. The sleeve assembly includes a sleeve and a third connecting rod, which are connected to the third connecting rod. The sleeve has a first end and a second end. The first end has a plurality of first water-permeable holes, and the edge of the second end has a cutting edge. The sleeve is fitted outside the sampling assembly and can move relative to the sampling assembly. The third connecting rod is fitted outside the rod assembly.

[0005] In some embodiments, the third connecting rod includes a first connecting part and a second connecting part, which are arranged sequentially from top to bottom. The second connecting part is located close to the sleeve and has a plurality of second water-permeable holes. The first connecting part is located away from the sleeve.

[0006] In some embodiments, a screwing column is provided on the first connecting rod, and the screwing column is arranged perpendicularly to the first connecting rod; a long slot is provided on the first connecting part, the size of which is adapted to the diameter of the screwing column, and the screwing column protrudes out of the third connecting rod through the long slot.

[0007] In some embodiments, the rod assembly further includes a first telescopic rod disposed between the first connecting rod and the second connecting rod; the first connecting portion and the second connecting portion are separate parts, and the sleeve assembly further includes a second telescopic rod disposed between the first connecting portion and the second connecting portion.

[0008] In some embodiments, the inner side of the first telescopic rod is provided with a first protruding ring; the outer side of the second telescopic rod is provided with a second protruding ring, and the first protruding ring overlaps with the second protruding ring; the first protruding ring is used to overlap with the second protruding ring after the first telescopic rod moves downward a preset distance, so as to drive the second telescopic rod to move downward synchronously.

[0009] In some embodiments, the activated carbon sampling device further includes a first driving unit, which is disposed on the first connecting rod and is tractively connected to the first telescopic rod. The first driving unit is used to drive the first telescopic rod to move vertically downward.

[0010] In some embodiments, the activated carbon sampling device further includes a second driving unit, which is disposed on the first connecting rod and is connected to the sampling rod in a transmission manner. The second driving unit is used to control the sampling depth of the sampling rod.

[0011] In some embodiments, the first water-permeable hole at the first end is fan-shaped.

[0012] In some embodiments, the sampling assembly further includes a plurality of first cover plates, which are spaced apart circumferentially along the sampling rod and are disposed at the upper end of the guide plate, with each first cover plate being adapted to the size of the first water-permeable hole.

[0013] In some embodiments, the bottom of the sampling rod is cone-shaped.

[0014] Unlike existing technologies, the above technical solution has the following beneficial effects:

[0015] This utility model discloses an activated carbon sampling device for an activated carbon pool, comprising a rod assembly, a sampling assembly, and a sleeve assembly. The rod assembly consists of a detachable first connecting rod and a second connecting rod, and the sampling depth can be adjusted by increasing or decreasing the number of second connecting rods. The sampling assembly includes a sampling rod detachably connected to the second connecting rod, and a guide plate spirally fixed to the periphery of the sampling rod; the spiral structure prevents the sample from sinking during collection. The sleeve assembly consists of a sleeve with a cutting edge and a third connecting rod. The first end of the sleeve has multiple first water-permeable holes, and the edge of the second end has a cutting edge. The sleeve is fitted onto the outside of the rod assembly via the third connecting rod and can move relative to the sampling assembly. During sampling, the sampling assembly is rotated to allow the guide plate to collect the sample, and then the sample is cut into the activated carbon layer through the cutting edge of the sleeve, with the first water-permeable holes achieving in-situ filtration. This device can obtain deep samples from the carbon pool without manual excavation, avoiding contamination and being easy to operate; the detachable structure facilitates adjustment of sampling depth and transport; the baffle plate and the first water-permeable hole work together to eliminate the need for pool drainage, improving sampling efficiency; the detachable connection of this device balances operational flexibility and sampling accuracy.

[0016] The above description of the utility model is merely an overview of the technical solution of this utility model. In order to enable those skilled in the art to better understand the technical solution of this utility model and to implement it based on the description and drawings, and to make the above-mentioned objectives and other objectives, features and advantages of this utility model easier to understand, the following description is provided in conjunction with the specific embodiments and drawings of this utility model. Attached Figure Description

[0017] The accompanying drawings are only used to illustrate the principles, implementation methods, applications, features, and effects of the present invention and other related contents, and should not be considered as limitations on the present invention.

[0018] In the accompanying drawings of the instruction manual:

[0019] Figure 1 This is a first structural schematic diagram of the activated carbon sampling device described in a specific embodiment;

[0020] Figure 2 This is a schematic diagram of the second structure of the activated carbon sampling device described in a specific embodiment;

[0021] Figure 3 This is a schematic diagram of the specific structure of the second connecting rod in a specific implementation method;

[0022] Figure 4 This is a schematic diagram of the specific structure of the sampling component described in the specific implementation method;

[0023] Figure 5 This is a schematic diagram of the specific structure of the sleeve assembly described in the specific implementation method;

[0024] Figure 6 This is a schematic diagram of the specific structure of the first water-permeable hole in a specific implementation method;

[0025] Figure 7 This is a schematic diagram of the specific structure of the third connecting rod described in the specific implementation method;

[0026] Figure 8 This is a schematic diagram of the specific structure of the screw-in cylinder described in the specific implementation method;

[0027] Figure 9 This is a schematic diagram of the third structure of the activated carbon sampling device described in a specific embodiment.

[0028] The reference numerals used in the above figures are explained as follows:

[0029] 1. Rod assembly;

[0030] 11. First connecting rod;

[0031] 111. Twist the cylinder;

[0032] 12. Second connecting rod;

[0033] 2. Sampling components;

[0034] 21. Sampling rod;

[0035] 22. Deflector plate;

[0036] 3. Sleeve assembly;

[0037] 31. Sleeve;

[0038] 311. First permeable hole;

[0039] 312. Blade edge;

[0040] 32. Third connecting rod;

[0041] 321. Second permeable hole;

[0042] 322. Long slot. Detailed Implementation

[0043] To illustrate in detail the possible application scenarios, technical principles, implementable specific solutions, and achievable objectives and effects of this utility model, the following description, in conjunction with the listed specific embodiments and accompanying drawings, provides a detailed explanation. The embodiments described herein are merely illustrative of the technical solutions of this utility model and are therefore intended to limit the scope of protection of this utility model.

[0044] In this document, the term "embodiment" means that a specific feature, structure, or characteristic described in connection with an embodiment may be included in at least one embodiment of this utility model. The term "embodiment" appearing in various places throughout the specification does not necessarily refer to the same embodiment, nor does it specifically limit its independence or connection with other embodiments. In principle, in this utility model, as long as there are no technical contradictions or conflicts, the technical features mentioned in each embodiment can be combined in any way to form corresponding implementable technical solutions.

[0045] Unless otherwise defined, the technical terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains; the use of related terms herein is merely for the purpose of describing particular embodiments and is not intended to limit the invention.

[0046] In the description of this utility model, the term "and / or" is used to describe the logical relationship between objects, indicating that three relationships can exist. For example, A and / or B means: A exists, B exists, and A and B exist simultaneously. Additionally, the character " / " generally indicates that the preceding and following objects have an "or" logical relationship.

[0047] In this invention, terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any actual quantity, hierarchy, or order between these entities or operations.

[0048] Without further limitations, the use of terms such as “comprising,” “including,” “having,” or other similar expressions in this invention is intended to cover non-exclusive inclusion, which does not exclude the presence of additional elements in a process, method, or product that includes the stated elements, such that a process, method, or product that includes a series of elements may include not only those defined elements but also other elements not expressly listed, or elements inherent to such a process, method, or product.

[0049] Similar to the understanding in the Examination Guidelines, in this utility model, expressions such as "greater than," "less than," and "exceeding" are understood to exclude the stated number; expressions such as "above," "below," and "within" are understood to include the stated number. Furthermore, in the description of the embodiments of this utility model, "multiple" means two or more (including two), and similar expressions related to "multiple" are also understood in this way, such as "multiple groups" and "multiple times," unless otherwise explicitly specified.

[0050] In the description of the embodiments of this utility model, the space-related expressions used, such as "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "vertical," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," and "circumferential," indicate the orientation or positional relationship based on the orientation or positional relationship shown in the specific embodiments or drawings. They are only for the convenience of describing the specific embodiments of this utility model or for the reader's understanding, and do not indicate or imply that the device or component referred to must have a specific position, a specific orientation, or be constructed or operated in a specific orientation. Therefore, they should not be construed as limitations on the embodiments of this utility model.

[0051] Unless otherwise expressly specified or limited, the terms "installation," "connection," "linking," "fixing," and "setting," as used in the description of the embodiments of this utility model, should be interpreted broadly. For example, "connection" can be a fixed connection, a detachable connection, or an integral setting; it can be a mechanical connection, an electrical connection, or a communication connection; it can be a direct connection or an indirect connection through an intermediate medium; it can be the internal connection of two components or the interaction between two components. For those skilled in the art to which this utility model pertains, the specific meaning of the above terms in the embodiments of this utility model can be understood according to the specific circumstances.

[0052] Please see Figures 1 to 9 This embodiment provides an activated carbon sampling device for an activated carbon pool, including a rod assembly 1, a sampling assembly 2, and a sleeve assembly 3. The rod assembly 1 includes a first connecting rod 11 and a second connecting rod 12, which are detachably connected. The sampling assembly 2 includes a sampling rod 21 and a guide plate 22, which are spirally distributed around the periphery of the sampling rod 21. The sampling rod 21 is detachably connected to the second connecting rod 12. The sleeve assembly 3 includes a sleeve 31 and a third connecting rod 32, which are connected. The sleeve 31 has a first end and a second end. The first end has a plurality of first water-permeable holes 311, and the edge of the second end has a cutting edge 312. The sleeve 31 is sleeved on the outside of the sampling assembly 2 and can move relative to the sampling assembly 2. The third connecting rod 32 is sleeved on the outside of the rod assembly 1.

[0053] In this embodiment, the activated carbon sampling device achieves non-destructive sampling of deep samples from the activated carbon pool through a modular design of rod assembly 1, sampling assembly 2, and sleeve assembly 3. Rod assembly 1 consists of a first connecting rod 11 and a second connecting rod 12, detachably connected by threads or snap-fit ​​structures, and can be extended according to the pool depth. The first connecting rod 11 is a rigid rod that can be segmented and connected to other components, providing basic support and transmitting operating force. Its end is detachably connected to the second connecting rod 12 by threads or snap-fit ​​structures, facilitating transportation or adjustment of the overall length of the device. The second connecting rod 12 is an extension rod coaxially connected to the first connecting rod 11, used to extend the longitudinal working range of the device. One end is fixed to the first connecting rod 11, and the other end is detachably connected to the sampling rod 21 of the sampling assembly 2, ensuring flexible and controllable sampling depth.

[0054] The sampling component 2 includes a sampling rod 21 and spirally distributed guide plates 22 around it. The sampling rod 21 is a columnar body, and the guide plates 22 are continuously surrounding curved surface structures used to collect the target medium. The spacing of the guide plates 22 is set according to the particle size of the activated carbon. Optionally, the spiral angle is controlled within the range of 25°-35° to ensure continuous material guiding effect when spiraling in.

[0055] The sleeve 31 refers to a hollow cylindrical protective structure used to enclose the sampling component 2 and isolate external interference. Its first end is the closed end near the top of the sampling rod 21, and the multiple first water-permeable holes 311 are evenly distributed circular or fan-shaped through holes to allow liquid or gas to exit the sleeve 31 during sampling. The second end is the open end at the bottom of the sleeve 31, and the edge 312 is a sharp ring structure formed by oblique cutting, used to cut the dense medium when cutting into the activated carbon layer and reduce propulsion resistance. The third connecting rod 32 is an auxiliary rod fixedly connected to the top of the sleeve 31, used to synchronously control the movement of the sleeve 31 along the axial direction of the rod assembly 1. The relative displacement between the sleeve 31 and the sampling component 2 is achieved through its structure sleeved on the outside of the rod assembly 1, thereby adjusting the cutting depth of the edge 312 and the exposure range of the water-permeable holes.

[0056] During sampling, the second connecting rod 12 is vertically inserted into the activated carbon tank after being aligned with the sampling rod 21. The rotating rod assembly 1 causes the guide plate 22 on the sampling rod 21 to cut into the activated carbon layer along a spiral trajectory. The axial force generated by the spiral structure pushes the activated carbon upwards along the gaps in the guide plate 22, filling the sampling cavity. When the sampling assembly 2 reaches the target depth, the third connecting rod 32 is held and pressure is applied downwards. The blade edge 312 of the sleeve 31, under its own weight and pressure, cuts into the activated carbon layer, forming a protective cover and effectively preventing the collapse of the surrounding carbon layer. During the lifting process, the liquid medium accumulated inside the sleeve 31 is filtered in situ through the first water-permeable hole 311, retaining the solid sample. After sampling is completed, all components are disassembled, and the columnar sample embedded in the spiral gaps of the guide plate 22 can be directly scraped for analysis.

[0057] The device provided in this embodiment overcomes the limitation of traditional sampling requiring emptying of the pool water through the synergistic effect of the guide plate 22 and the first water-permeable hole 311, thereby improving sampling efficiency. The dynamic sealing technology of the sleeve 31 maintains the original layered structure of the sample and avoids the risk of surface carbon powder contaminating deeper samples. The detachable connection of the first connecting rod 11 and the second connecting rod 12, the sampling rod 21 and the second connecting rod 12 enables continuous adjustment of the sampling depth. At the same time, it facilitates the transportation and storage of the rod assembly 1, the sampling assembly 2 and the sleeve assembly 3 after disassembly, improving the convenience of the device.

[0058] In some embodiments, the third connecting rod 32 includes a first connecting part and a second connecting part, which are arranged sequentially from top to bottom. The second connecting part is located close to the sleeve 31 and has a plurality of second water-permeable holes 321. The first connecting part is located away from the sleeve 31.

[0059] In this embodiment, the third connecting rod 32 is a hollow structure, comprising a first connecting part and a second connecting part coaxially arranged, wherein the second connecting part is adjacent to the first end of the sleeve 31, and the two are connected by welding or flange to form an integral structure. A plurality of second permeable holes 321 are evenly distributed along the circumference of the outer surface of the second connecting part for drainage. The first connecting part is located at the top of the third connecting rod 32 and has no permeable structure. During sampling, when the sleeve 31 cuts into the activated carbon layer, the second permeable holes 321 and the first permeable holes 311 of the sleeve 31 form a double-layer water filtration channel. The second connecting part is located within the annular gap between the sleeve 31 and the rod assembly 1, and its second permeable holes 321 can intercept upward-flowing fine particles, preventing the first permeable holes 311 from becoming clogged.

[0060] This embodiment forms a graded water filtration system by setting a third connecting rod 32 with a second water-permeable hole 321. The first water-permeable hole 311 of the sleeve 31 is responsible for primary water filtration, and the second water-permeable hole 321 of the second connecting part performs secondary interception. The dual filtration mechanism effectively separates solid impurities of different particle sizes and avoids the decrease in drainage efficiency caused by filter hole blockage. The second water-permeable holes 321 are set on the second connecting part and are concentrated near the sampling section, which improves the rationality of the water filtration path, while maintaining the structural strength of the first connecting part to withstand the operating torque.

[0061] In some embodiments, the first connecting rod 11 is provided with a screwing column 111, which is perpendicular to the first connecting rod 11; the first connecting part is provided with a long slot 322, the size of which is adapted to the diameter of the screwing column 111, and the screwing column 111 protrudes out of the third connecting rod 32 through the long slot 322.

[0062] In this embodiment, a cylindrical screw-on column 111 is welded to the outer wall of the first connecting rod 11, with its axis perpendicular to the radial direction of the first connecting rod 11. Preferably, the end of the screw-on column 111 extends 30-50mm beyond the surface of the rod body, facilitating the operation of the rod assembly 1 through the screw-on column 111. The first connecting part of the third connecting rod 32 has an elongated slot 322, the width of which is preferably 0.2-0.5mm larger than the diameter of the screw-on column 111, allowing the screw-on column 111 to extend out of the elongated slot 322 and slide along the elongated slot 322. The elongated slot 322 extends axially along the third connecting rod 32. In use, the third connecting rod 32 is first lifted a certain distance, the rod assembly 1 is rotated to allow the sampling component 2 to cut into the activated carbon layer, and then the third connecting rod 32 is pushed down. The elongated slot 322 on the third connecting rod 32 provides clearance for the screw-on column 111 of the rod assembly 1, allowing the sleeve 31 connected to the second connecting part to smoothly cut into the activated carbon layer, improving the convenience of using the device.

[0063] This embodiment improves operational convenience by cooperating with the screw-in column 111 and the long slot 322. The operating fulcrum formed by the outward extension of the end of the screw-in column 111 is easy for manual gripping and force application. The long slot 322 provides axial clearance space for the rotational movement of the rod assembly 1, ensuring that the screw-in column 111 can slide along the slot without interference when the sleeve 31 is pressed down. After the screw-in column 111 slides to the set position, the rotating rod assembly 1 forms a circumferential limit with the long slot 322, realizing synchronous control of the insertion depth of the sleeve 31 and the sampling action of the rod assembly 1, avoiding positioning deviation caused by step-by-step operation, and ensuring the accuracy of the coordinated movement of the sleeve 31 and the sampling assembly 2.

[0064] In some embodiments, the rod assembly 1 further includes a first telescopic rod disposed between the first connecting rod 11 and the second connecting rod 12; the first connecting part and the second connecting part are separate parts, and the sleeve assembly 3 further includes a second telescopic rod disposed between the first connecting part and the second connecting part.

[0065] In this embodiment, the first telescopic rod refers to the telescopic structure disposed between the first connecting rod 11 and the second connecting rod 12, used to change the total height of the rod assembly 1 by adjusting its axial length to adapt to the sampling requirements of activated carbon layers at different depths. The second telescopic rod refers to the telescopic component in the sleeve assembly 3 that connects the first connecting part and the second connecting part, used to independently adjust the axial length of the sleeve assembly 3, so that the relative position of the sleeve 31 and the rod assembly 1 can flexibly match the sampling environment. The first connecting part and the second connecting part are designed separately, physically connected by the second telescopic rod but retaining independent displacement capability. The first connecting part is used to cooperate with the screw column 111 of the rod assembly 1, and the second connecting part is used to fix the sleeve 31. The separate structure ensures that the length adjustment of the sleeve assembly 3 is not affected by the telescopic movement of the rod assembly 1, and both can independently complete the extension or retraction movement. The dual telescopic design of the rod assembly 1 and the sleeve assembly 3 achieves layered control of the sampling depth and the insertion depth of the sleeve 31 through the synergistic effect of the first telescopic rod and the second telescopic rod.

[0066] This embodiment enhances the device's adaptability to different sampling scenarios by independently adjusting the telescopic extension of the rod assembly 1 and the sleeve assembly 3. The first telescopic rod adjusts the total height of the rod assembly 1 to match the thickness of the activated carbon layer, while the second telescopic rod adjusts the extension length of the sleeve assembly 3 to precisely control the insertion position of the sleeve 31. The split-type connecting part design ensures that the two telescopic systems do not interfere with each other, avoids motion conflicts during synchronous adjustment, ensures the relative positioning accuracy of the sampling assembly 2 and the sleeve 31, simplifies the operation steps, and reduces the complexity of multi-component coordinated adjustment.

[0067] In some embodiments, the inner side of the first telescopic rod is provided with a first protruding ring; the outer side of the second telescopic rod is provided with a second protruding ring, and the first protruding ring overlaps with the second protruding ring; the first protruding ring is used to overlap with the second protruding ring after the first telescopic rod moves downward a preset distance, so as to drive the second telescopic rod to move downward synchronously.

[0068] In this embodiment, the first convex ring forms a mechanical limiting point when the first telescopic rod moves downward independently to a preset position; the contour of the second convex ring matches the contact surface of the first convex ring, and is used to establish a force transmission path when the two overlap. When the first telescopic rod is pressed down to a preset stroke, the inner inclined surface or plane of the first convex ring fits against the outer contact surface of the second convex ring, so that the axial movement of the two components is linked.

[0069] This embodiment achieves phased motion control through the overlapping of the first and second convex rings. In the initial stage, the first telescopic rod moves downward independently to adjust the height of the rod assembly 1. When the first convex ring contacts the second convex ring, continued downward pressure will synchronously drive the second telescopic rod to move, thereby causing the sleeve assembly 3 to press down. This embodiment allows the operator to prioritize adjusting the sampling depth of the rod assembly 1, and then automatically triggers the sleeve 31 to engage, avoiding positioning errors that may occur during manual step-by-step operation. The beveled engagement of the first and second convex rings reduces contact impact and ensures that the two components remain axially aligned during linkage, preventing jamming or wear caused by misalignment.

[0070] In some embodiments, the activated carbon sampling device further includes a first driving unit, which is disposed on the first connecting rod 11 and is connected to the first telescopic rod in a transmission manner. The first driving unit is used to drive the first telescopic rod to move vertically downward.

[0071] In this embodiment, the first drive unit refers to a power output device fixed to the side wall of the first connecting rod 11. It can be an electric push rod or a hydraulic cylinder structure, used to provide axial driving force to the first telescopic rod through a linear transmission mechanism. Optionally, the first connecting rod 11 is provided with a guide rail or limiting groove to constrain the movement trajectory of the first telescopic rod and transmit the thrust of the drive unit. The output end of the first drive unit can be mechanically coupled to the top of the first telescopic rod through a coupling or hinge mechanism to ensure that the driving force can be effectively transmitted to the first telescopic rod in the vertical direction.

[0072] In this embodiment, after the first drive unit is activated, it pushes the first telescopic rod downward along the guide structure of the first connecting rod 11. When the first telescopic rod moves to a preset stroke, its inner first convex ring and the second convex ring of the second telescopic rod form an overlapping linkage, thereby driving the sleeve assembly 3 to press down synchronously to complete the sampling action. This embodiment converts manual operation into mechanical drive, improving the controllability and repeatability of the sampling process, while reducing the need for the operator to apply external force. The rigid structure of the transmission connection ensures efficient transmission of driving force and avoids displacement errors caused by elastic deformation.

[0073] In some embodiments, the activated carbon sampling device further includes a second driving unit, which is disposed on the first connecting rod 11 and is connected to the sampling rod 21 in a transmission manner. The second driving unit is used to control the sampling depth of the sampling rod 21.

[0074] In this embodiment, the second drive unit refers to a power control device integrated on the other side of the first connecting rod 11. It can be a stepper motor or a servo motor paired with a gear reduction mechanism, used to convert rotary motion into linear displacement to adjust the axial position of the sampling rod 21. The output shaft of the second drive unit can engage with the meshing structure of the side wall of the sampling rod 21 through a gear rack or lead screw and nut mechanism to form a power transmission path to precisely control the vertical movement of the sampling rod 21.

[0075] This embodiment achieves layered control through the independent configuration of dual drive units. The second drive unit is activated after the sampling rod 21 reaches the target area, driving it to extend downwards along the inner wall of the sleeve 31 to the set sampling depth, and then retracts in the opposite direction after completing the activated carbon grabbing. This embodiment decouples the sampling depth adjustment from the overall pressing action of the rod assembly 1, avoiding overshoot or positioning deviation that may occur with a single drive system. The precision meshing structure of the transmission connection ensures the accuracy of the movement of the sampling rod 21, while the self-locking characteristics of the gears or lead screws maintain positional stability during the sampling process, preventing depth deviation caused by vibration.

[0076] In some embodiments, the first water-permeable hole 311 at the first end is fan-shaped.

[0077] In this embodiment, by designing the first permeable hole 311 at the first end as a fan-shaped structure, the water flow forms a multi-directional diffusion path when passing through, effectively improving the water flow efficiency and reducing the risk of clogging. The fan-shaped, gradually expanding opening can increase the effective water flow area while ensuring structural strength. Its arc-shaped edge can guide the water flow to be evenly distributed, avoiding the impact of local eddies on the stability of the device. Furthermore, the symmetrical design of the fan shape helps to maintain fluid pressure balance and extend the durability of the permeable structure.

[0078] In some embodiments, the sampling assembly 2 further includes a plurality of first cover plates, which are spaced apart circumferentially along the sampling rod 21 and are disposed at the upper end of the guide plate 22. Each first cover plate is adapted to the size of the first water-permeable hole 311.

[0079] In this embodiment, the assembly structure of multiple first cover plates spaced circumferentially along the sampling rod 21 and the upper end of the guide plate 22 achieves the dual functions of dynamic control of the water permeability path and impurity blocking. The size compatibility between the first cover plates and the first water permeable holes 311 ensures that they completely cover the holes when closed, preventing external particles from entering the internal channels of the sampling rod 21. The spaced distribution allows some of the first water permeable holes 311 to be selectively opened under specific operating conditions, forming a stepped water flow pattern, which maintains the basic flux while avoiding sudden changes in flow velocity caused by full opening. The positioning method of the upper end of the guide plate 22 can coordinate with the opening and closing action of the first cover plates, and adaptively adjust the coverage angle using the fluid pressure difference, reducing the risk of mechanical wear while enhancing the directional guidance effect of the guide plate 22 on the water flow, thereby improving the environmental adaptability and operational reliability of the sampling component 2.

[0080] In some embodiments, the bottom of the sampling rod 21 is cone-shaped.

[0081] In this embodiment, by designing the bottom of the sampling rod 21 as a pointed conical structure, the penetration and media adaptability of the sampling process are significantly improved. The pointed conical bottom reduces insertion resistance, making it easier to penetrate the target sampling layer in hard or high-density sediments, while reducing the squeezing and disturbance to the surrounding media, ensuring the integrity of the original sample state; its streamlined contour can also guide particles to slide off along the slope, avoiding clogging of the sampling port, and reducing the adhesion residue when the rod is retrieved, ensuring the stability and cleanliness of continuous sampling, and extending the service life of the device.

[0082] Unlike existing technologies, the above technical solution has the following beneficial effects:

[0083] This invention achieves non-destructive sampling and efficient operation of deep samples from activated carbon pools through a modular design of rod assembly 1, sampling assembly 2, and sleeve assembly 3. Rod assembly 1 uses a detachably connected first connecting rod 11 and second connecting rod 12, which can be stacked and extended to adapt to different pool depths. It works in conjunction with the third connecting rod 32 of sleeve assembly 3, forming an axial linkage with the sleeve 31. The cutting edge 312 cuts the activated carbon layer and achieves in-situ filtration through the first water-permeable hole 311, effectively preventing collapsing contaminants and preserving the original layered structure of the sample. The spirally arranged guide plate 22, with its optimized spiral angle and gap setting, provides continuous material guidance, working in conjunction with the bottom of the pointed conical sampling rod 21 to reduce penetration resistance and improve sampling efficiency. The graded filtration system of the third connecting rod 32 separates impurities through the design of the first and second water-permeable holes 311 and 321, preventing filter blockage. Combined with the avoidance structure of the screw-in column 111 and the long groove 322, it achieves precise synchronous control of the sleeve 31's cutting depth and sampling action. The separate design of the first and second telescopic rods allows for independent length adjustment of the rod assembly 1 and the sleeve assembly 3. This, combined with the overlapping of the first and second convex rings, enables phased linkage, enhancing the device's adaptability to different sampling environments. The integrated configuration of the first and second drive units converts manual operation into mechanical transmission, improving sampling depth control accuracy and ease of operation. The combination of the fan-shaped first water-permeable hole 311 and the adjustable first cover plate optimizes dynamic control of the fluid path, further ensuring sampling stability. This device features a detachable structure for easy transportation and storage, and its overall design balances functionality and practicality.

[0084] Finally, it should be noted that although the above embodiments have been described in the text and drawings of this utility model, this should not limit the scope of patent protection of this utility model. Any technical solutions resulting from equivalent structural or procedural substitutions or modifications made based on the essential concept of this utility model and utilizing the content described in the text and drawings of this utility model, as well as the direct or indirect application of the technical solutions of the above embodiments to other related technical fields, are all included within the scope of patent protection of this utility model.

Claims

1. An activated carbon sampling device for an activated carbon pool, characterized in that, include: A rod assembly includes a first connecting rod and a second connecting rod, wherein the first connecting rod and the second connecting rod are detachably connected; The sampling assembly includes a sampling rod and a guide plate, the guide plate being spirally distributed around the periphery of the sampling rod, and the sampling rod being detachably connected to the second connecting rod; A sleeve assembly includes a sleeve and a third connecting rod. The sleeve is connected to the third connecting rod. The sleeve has a first end and a second end. The first end is provided with a plurality of first water-permeable holes. The edge of the second end is provided with a cutting edge. The sleeve is sleeved outside the sampling assembly and can move relative to the sampling assembly. The third connecting rod is sleeved outside the rod assembly.

2. The activated carbon sampling device for an activated carbon pool according to claim 1, characterized in that, The third connecting rod includes a first connecting part and a second connecting part, which are arranged sequentially from top to bottom. The second connecting part is located close to the sleeve and has multiple second water-permeable holes. The first connecting part is located away from the sleeve.

3. The activated carbon sampling device for an activated carbon pool according to claim 2, characterized in that, The first connecting rod is provided with a screwing column, which is arranged perpendicularly to the first connecting rod; The first connecting part is provided with a long slot, the size of which is adapted to the diameter of the screwing column, and the screwing column protrudes from the third connecting rod through the long slot.

4. The activated carbon sampling device for an activated carbon pool according to claim 2, characterized in that, The rod assembly also includes: The first telescopic rod is disposed between the first connecting rod and the second connecting rod; The first connecting part and the second connecting part are separate, and the sleeve assembly further includes: The second telescopic rod is disposed between the first connecting part and the second connecting part.

5. The activated carbon sampling device for an activated carbon pool according to claim 4, characterized in that, The inner side of the first telescopic rod is provided with a first protruding ring; The second telescopic rod has a second protruding ring on its outer side, and the first protruding ring overlaps with the second protruding ring; The first protruding ring is used to engage with the second protruding ring after the first telescopic rod has moved downward a preset distance, so as to drive the second telescopic rod to move downward synchronously.

6. The activated carbon sampling device for an activated carbon pool according to claim 4, characterized in that, Also includes: A first drive unit is disposed on the first connecting rod. The first drive unit is connected to the first telescopic rod in a transmission manner. The first drive unit is used to drive the first telescopic rod to move vertically downward.

7. The activated carbon sampling device for an activated carbon pool according to claim 1, characterized in that, Also includes: The second drive unit is mounted on the first connecting rod and is connected to the sampling rod in a transmission manner. The second drive unit is used to control the sampling depth of the sampling rod.

8. The activated carbon sampling device for an activated carbon pool according to claim 1, characterized in that, The first water-permeable hole at the first end is fan-shaped.

9. The activated carbon sampling device for an activated carbon pool according to claim 8, characterized in that, The sampling assembly also includes a plurality of first cover plates, which are spaced apart circumferentially along the sampling rod and are disposed at the upper end of the guide plate. Each first cover plate is adapted to the size of the first water-permeable hole.

10. The activated carbon sampling device for an activated carbon pool according to claim 1, characterized in that, The bottom of the sampling rod is cone-shaped.

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